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Finding the Fourth Proportional to 147,188.88, 220,779 and 47,353.68

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Solution

The fourth proportional to 147,188.88, 220,779 and 47,353.68 is: 71,029.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,188.88 : 220,779 = 47,353.68 : x
  2. Step 2: Convert to fraction form
    147,188.88/220,779 = 47,353.68/x
  3. Step 3: Cross multiply
    147,188.88x = 220,779 × 47,353.68
  4. Step 4: Simplify right side
    147,188.88x = 10,454,698,116.72
  5. Step 5: Solve for x
    x = 10,454,698,116.72/147,188.88
  6. Step 6: Final answer
    x = 71,029.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.